2. 外语
  3. According to biologists, animal populations at a given time are _________ by food supplies at that time.

According to biologists, animal populations at a given time are _________ by food supplies at that time.

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问题 According to biologists, animal populations at a given time are _________ by food supplies at that time.
选项 A、governed
B、sustained
C、mediated
D、manipulated
答案A
解析 动词辨义。govern 意为“统治，支配”，如：Chance usually governs the outcome of the game．(运气经常操纵比赛的结果。)sustain意为“支撑，持续”，如：The sea wall sustains the shock of the waves．(海堤能抵挡海浪的冲击。) mediate 意为“调解，斡旋”，如：He mediated a settlement between labor and management．(他在劳资双方间通过调停达成和解。) manipulate 意为“操作，操纵”，通常指操纵人、市价或市场，如：He manipulated public opinion in his favor．(他巧妙地使公众舆论倒向他。)根据题意，应选A)。
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大学英语六级

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